was/were did -ed 的用法区分

did是助动词，一般提问的时候会用到，比如你问
Did you go to school yesterday?
陈述句用did是用来强调程度，如
I did love it。 不过强调程度一般用现在时不用过去时。
还有出现过去范畴的句子中，要否定动作的时候借用did,如
I didn't go to school yesterday.
那么，动词过去式好比这个句子的肯定句，如
I went to school yesterday.
went 是 go 的过去式。你看看这样明白没有